You can change one news to another with the keyboard when the Screen Saver is running. To go to the previous news press the key "Up" and to go to the next news press the key "Down".
To download next or previous Channel you can use the "Right" and "Left" keys.
By pressing the "Pause/Break" key on your keyboard you extend the time interval of displaying current topic for a 30 secs.
Tick the item "Enable keyboard navigation" in the General tab to use this function.